The thorax is enlarged and contains the extensive musculature required for wing movement.
Lateral View

Dorsal View

The two wings are characteristic of Diptera and are attached to the mesothorax.
Below and behind the point where each wing is attached, is a bulb-shaped stalked structure called a haltere. The haltere is richly innvervated and is a balance organ which aids in maintaining equilibrium during flight.
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